ubuntu split screen (dual screen display)

The ubuntun system realizes two screen display of notebook and external monitor

1. View relevant display information and enter commandsxrandr

You can see that I have two monitors: eDP-1 (main monitor) and HDMI-2

2. Setting up the display

2.1. Two screens show the same content-clone

xrandr --output HDMI-2 --same-as eDP-1 --auto

Description:

1. HDMI-2 and eDP-1 are the monitor information you just viewed
2. auto is the highest resolution

2.2. Dual screen display different content-extended

If the secondary display is on the left side of the main display, use the left extension

xrandr --output HDMI-2 --left-of eDP-1 --auto

If the secondary display is on the right side of the main display, we use the right extension

xrandr --output HDMI-2 --right-of eDP-1 --auto

2.3. To specify the resolution of the external monitor, you can use the following command (1280*1024)

xrandr --output HDMI-2 --right-of eDP-1 --mode 1280x1024

2.4. Turn off the eDP-1 display

xrandr --output eDP-1 --off

2.5. Turn on the HDMI-1 interface display and turn off the VGA-1 interface display

xrandr --output HDMI-2 --auto --output eDP-1 --off

2.6. If you want more settings, you can use the command to xrandr --helpview the help

3. Split screen settings can also be set in the display of system settings